ASC8851ET/M2,551

Overview

The ASC8851ET/M2,551 is a single-chip system-on-chip (SoC) designed for full HD IP camera applications. It features an ARM926EJ-S CPU operating at up to 600 MHz with 16 kB instruction and data caches. The device supports video compression in H.264, MPEG-4, and MJPEG formats, achieving up to 1080p at 45 fps or D1 at 270 fps. It includes advanced image processing capabilities such as digital WDR, noise reduction, and auto white balance. Memory support includes two SDRAM channels capable of handling up to 2 GB total capacity using DDR-II or DDR-III standards.

Feature Summary

• H.264 encoding performance up to 1080p @ 45 fps or D1 @ 270 fps
• ARM926EJ-S processor core running at 600 MHz
• Support for up to 12 MPixels raw sensor data input
• Integrated AES, TDES, DES, and SHA encryption engines

Applications

• Security IP cameras
• Video conferencing systems
• Video door phones and intercoms
• Industrial vision applications

Procurement Notes

Verify the M2 suffix indicates the specific hardware revision documented in the datasheet. Confirm package compatibility with the TFBGA-484 footprint measuring 15 x 15 mm with a 0.65 mm pitch. Ensure design requirements align with the supported memory interfaces and peripheral connectivity options listed in the selection guide.

Selection Notes

Select this model for applications requiring high-performance H.264 encoding at 1080p resolution. The ASC8851 offers higher sensor resolution support (12 MPixels) compared to the ASC884x series. Consider the integrated Ethernet MAC and USB 2.0 OTG when designing networked camera architectures that require direct sensor interfacing without external controllers.

Part Context

The ASC8851 belongs to the NXP ASC884x and ASC885x family of application-specific processors. These devices are pin-to-pin and software-compatible within the family, allowing for scalable product development. The ASC8851 represents the high-end variant in this series, optimized for demanding video processing tasks in digital switched networks.

Replacement Considerations

The ASC884x series serves as a lower-performance alternative within the same family. Verify functional equivalence if substituting with other members of the ASC884x/ASC885x line due to shared software compatibility and pin configurations.